Vibrating propeller.



.E. HILDEBRANDT.

VIBRATING PROPELLER.

APPLICATION FILED MAR. 29. 1909.

Patented Dec. 14, 1909.

WITNyESESi ATTORNEY UNITE STAT}??? ATENT @FFIQE.

ELLIETT HILDEBRANDT, OF SPOKANE, WASHINGTON, ASSIGNOR- OF (NE-HALF TOWILLIAM W. MARSH, OF SPOKANE, WASHINGTON.

VIBRATING PROPELLER.

Application filed March 29, 1909.

To all whom it may concern;

Be it known that I, ELLIETT HILonnRxND'r, a citizen of the UnitedStates, residing at Spokane, in the county of Spokane and State ofVashington, have invented a new and useful Vibrating Propeller, of whichthe following is a specification.

My invention relates to improvements in propellers having a flexibleblade adapted to be vibrated, and the objects of my improvement are toprovide means for vibrating the propeller, and also for reversing themotion and backing the boat.

I attain these objects by the mechanism illustrated in the accompanyingdrawing, in which Figure 1 is a perspective view of the mechanismcomplete, ready for operation; Fig. 2 shows cam 16 in engagement withdepression 16 in disk 6; Fig. 3 is an end view of the mechanism inoperation, with the shifting device removed. Fig. l is a plan view ofthe vibrating mechanism in opera tion; and Fig. 5 shows ball and socketjoint for vibrating the propeller shaft.

Referring to the drawings, the vibrating propeller l is attached solidlyto auxiliary shaft 2, which is mounted upon the stern of the boat by aball and socket joint 3 as shown in Fig. 5. Any form of vibratingpropeller blade may be used, although I prefor to use the fish-tailconstruction. To prevent vertical movement of the shaft 2, horizontalguides 4 are provided. It will be seen that, as mounted, the shaft 2 iscapable of two movements, a revolving and a horizontal vibratingmovement, the former being used to actuate the auxiliary screws toreverse the motion and back the boat, and the latter to vibrate thepropeller blade and propel the boat forward. To impart these twomovements to the shaft 2, the mechanism hereinafter described isdesigned.

6 is a disk attached solidly to the end of shaft 2, provided on oppositesides with lugs 7 and 7*, the outer ends of which are bent inwardlytoward the center of the disk.

8 is the main engine shaft on which is adjustably mounted sleeve 9 bykey 10. To adjust the sleeve 9 on the shaft 8, the lever 11 is pivotedat 12 on the bottom of the boat, the lever having a yoke 13 on which ispivoted a ring 14 engaging an annular depression 15 in the sleeve.Attached solidly to the sleeve 9 is a cam 16, the dis- Specification ofLetters Patent.

Patented Bee. 1%. 1966.

Serial No. 486,606.

' tance from the heel to the toe being approximately the distancebetween the two lugs 7 and 7 at their outer ends. To permit of the mainshaft 8 and auxiliary shaft 2 being joined and operated as one shaft, adepression 16 is provided on the surface of the disk 6 to receive thecam 16, thus locking the two shafts together.

In operation, with the different parts in the position as shown in Fig.1, on the shaft 8 being revolved, the cam 16 will first engage and pushaside horizontally the lug 7, thus bringing the heel of the cam inengagement with the lug 7 as the toe leaves lug 7, as shown in Fig. 3.The lug 7 is then pushed aside by the cam 16 in the opposite direction,causing the shaft 2 and flexible blade 1 to vibrate and propel the boat.T 0 reverse the motion and back the boat, the sleeve 9 is moved backwardon shaft 8 by lever 11, which motion first brings the cam 16 out ofengagement with lugs 7 and 7 the base of the lugs 7 and 7 being extendedoutwardly so as to clear the cam. The cam 16 then enters the depression16 in the disk 6, as in Fig. 2, binding the shafts 8 and 2 together,which then revolve and operate the screw 5. The vibratory movement isagain imparted by moving the cam 16 forward out of engagement with thedisk 6 and into engagement with the lugs 7 and 7 Having thus describedmy invention, what I claim as new and desire to secure by LettersPatent, is

1. A vibrating propeller actuating mechanism, consisting of an auxiliaryvibratory shaft, oppositely disposed lugs on the forward end of theshaft, a main shaft, and a cam on the main shaft adapted to engage thelugs on the auxiliary shaft.

2. A vibrating propeller actuating mechanism, consisting of an auxiliaryvibratory shaft, a disk attached to the shaft, lugs'oppositely disposedon the circumference of the disk, a main shaft, and a cam carried by themain shaft adapted to engage the lugs on the disk.

3. A vibrating propeller actuating mechanism, consisting of anauxiliary, vibratory shaft, oppositely disposed lugs on the forward endof the shaft, a main shaft, an adjustable sleeve on the main shaft, anda cam on the sleeve adapted to engage the lugs on the auxiliary shaft.

at. A vibrating propeller actuating mechanisni consisting of anauxiliary shaft fulcrinned between its ends, a disk on. the forward endof the shaft, lugs oppositely disposed on the circumference of the disk,the outer ends of the lugs being bent toward the center of the disk, amain shaft, an adjustable sleeve on the main shaft actuated by a lever,and a cam on the sleeve adapted to engage the lugs and a depression inthe face of the disk.

5. A Yibratingpropeller actuating mechanism, consisting of an auxiliaryvibratory shaft, a disk on the forward end of the shaft, lugs oppositelydisposed on the circumference of the disk and having their ends bent 15toward and parallel to each other, a main shaft, an adjustable sleeve onthe main shaft, and a crescent shaped cam 011 the sleeve adapted toengage the lugs on the disk.

ELLIETT HILDEBRANDT.

l/Vitnesses JOHN B. JOHNSTON, G. J. BOWMAN.

